A device for fixing an item to a building structure, for example for use as a roof fixing, is disclosed. The Cr concentration in the Cr-depleted zone is at least 10%, and the thickness of the Cr-depleted zone is at most 20 micrometers. The invention further relates to genetic complements of plants of variety CH297368. A frontplane layer including passive devices such as LCDs, OLEDs, photosensitive materials, or piezo-electric materials is formed over the backplane layer to form an active matrix structure.